Affects Linux kernel core infrastructure; widely deployed across industries.
CVE-2026-46266
Linux kernel RAW sockets with IPPROTO_RAW can be abused by crafted ICMP.
Is CVE-2026-46266 being exploited?
Not confirmed. CVE-2026-46266 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-46266?
CVE-2026-46266 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-46266?
Yes. A fix has been recorded for CVE-2026-46266. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-46266 affect?
CVE-2026-46266 affects Linux kernel. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-46266?
Patch/update the kernel to the fixed release immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote ICMP craft targeting RAW sockets may alter kernel state/cache, risking instability or DoS.
Immediate action required
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 47276297140ee6712646f9b19fb04fe26daedd01
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < db76b75ede3810e7cf9cfea5067d4f3e0993768b
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 19e42490c89bac9a388f28179e66bebbef350f99
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 531c1aec81bfe19d00af13da5531fbb8209e4bd2
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < 719d3932b8f6e3348ce2f0ac58e278301fc17575
- affected>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and < c89477ad79446867394360b29bb801010fc3ff22
- affected2.6.12
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.